added api logic, vitest, minimal testing ui

web/src/main.tsx

@@ -0,0 +1,30 @@
+import React from "react";
+import ReactDOM from "react-dom/client";
+import { BrowserRouter } from "react-router-dom";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { ReactQueryDevtools } from "@tanstack/react-query-devtools";
+import { ToastProvider } from "./components/Toast";
+import App from "./App";
+import "./styles.css";
+
+const client = new QueryClient({
+  defaultOptions: {
+    queries: {
+      retry: 1,
+      refetchOnWindowFocus: false,
+    },
+  },
+});
+
+ReactDOM.createRoot(document.getElementById("root")!).render(
+  <React.StrictMode>
+    <QueryClientProvider client={client}>
+      <BrowserRouter>
+        <ToastProvider>
+          <App />
+        </ToastProvider>
+      </BrowserRouter>
+      <ReactQueryDevtools initialIsOpen={false} />
+    </QueryClientProvider>
+  </React.StrictMode>
+);